A game of Hide and Seek:

 
One day Scientist in heaven decided to play a game of hide-and-seek. Einestine was supposed to count to 100 than go find the others. As Einstein was counting Newton draws a 1x1 meter square on the ground beside him and stood inside the square.

Einstein counted to one 100 and said here I come ready or not which at this point he saw Newton standing next to him and looking right at him. He told Newton I found you and you are out of the game. Newton calmly answered: I’m not out and I’m not even Newton.

At this point all the scientists came out of hiding to hear him proving that he is not Newton, he continued and told Einstein: No, you did not find Newton, you found 1 Newton per square meter. Since a Newton per Square meter is 1 Pascal, therefore you found Pascal.